A) Eye color B) Claw size C) Body shape D) Leg length
A) True crabs have a reduced abdomen tucked under the cephalothorax B) False crabs live only in freshwater C) False crabs are larger D) True crabs have more legs
A) Broad and flattened B) Star-shaped C) Round and bulbous D) Long and narrow
A) Carapace B) Cephalothorax C) Abdomen D) Prosoma
A) Uropods B) Pereiopods C) Chelipeds D) Pleopods
A) Five B) Three C) Six D) Four
A) Camouflage B) Reproduction C) Digging D) Swimming
A) By the length of the legs B) By the shape of the abdominal flap C) By the size of the claws D) By the color of the carapace
A) Juvenile crab B) Male crab C) Hermaphrodite crab D) Female crab
A) Hybrid crab B) Female crab C) Male crab D) Immature crab
A) Waste removal B) Oxygen extraction C) Food digestion D) Sensory perception
A) Externally, attached to the body B) On the abdomen C) On the legs D) Within the gill chambers beneath the carapace
A) Digestion B) Locomotion C) Respiration D) Protection
A) Large, symmetrical claws B) Paddle-like swimming legs C) Long legs relative to their body size D) Brightly colored carapace
A) Hermit crabs B) King crabs C) Stone crabs D) Ghost crabs
A) Box crab B) Snow crab C) Fiddler crab D) Hermit crab
A) A flattened, shovel-like carapace B) One greatly enlarged claw in males C) The ability to climb trees D) Brightly colored walking legs
A) Pea crab B) Coconut crab C) Decorator crab D) Mud crab
A) Osmoregulation B) Metamorphosis C) Ecdysis D) Regeneration
A) To grow larger B) To change color C) To shed parasites D) To reproduce
A) They were once classified as crabs but have since been reclassified. B) An accurate descriptor, it's a type of crab. C) A misnomer, they are more closely related to spiders and scorpions. D) A regional term for a certain type of true crab
A) Leg structure B) Internal organ structure C) Claw shape D) Carapace ornamentation
A) Epipods B) Marginal setae C) Branchial ridges D) Rostral spines
A) Herbivorous B) Carnivorous C) Omnivorous D) Detritivorous
A) Ability to absorb oxygen through their skin B) Specialized lungs C) Waterproof carapace D) Modified gill chambers
A) Feeding B) Sensing vibrations C) Defense D) Swimming
A) Shore crabs B) Hermit crabs C) Spider crabs D) King crabs
A) Zoea B) Nauplius C) Megalopa D) Cyprid
A) Snow crab B) Dungeness crab C) Red king crab D) Blue crab
A) They don't communicate B) Through visual and chemical signals C) Primarily through vocalizations D) Only through tactile signals |